📄 pcan_main.h
字号:
#ifndef __PCAN_MAIN_H__#define __PCAN_MAIN_H__//****************************************************************************// Copyright (C) 2001,2002,2003 PEAK System-Technik GmbH//// linux@peak-system.com// www.peak-system.com//// This program is free software; you can redistribute it and/or modify// it under the terms of the GNU General Public License as published by// the Free Software Foundation; either version 2 of the License, or// (at your option) any later version.//// This program is distributed in the hope that it will be useful,// but WITHOUT ANY WARRANTY; without even the implied warranty of// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the// GNU General Public License for more details.//// You should have received a copy of the GNU General Public License// along with this program; if not, write to the Free Software// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.//// Maintainer(s): Klaus Hitschler (klaus.hitschler@gmx.de)//****************************************************************************//****************************************************************************//// pcan_main.h - global defines to include in all files this module is made of//// $Log: pcan_main.h,v $// Revision 1.40 2003/04/22 17:36:59 klaus// now covers kernel 2.4.19//// Revision 1.39 2003/03/02 10:58:07 klaus// merged USB thread into main path//// Revision 1.38 2003/03/02 10:58:07 klaus// merged USB thread into main path//// Revision 1.37.2.23 2003/02/16 19:55:52 klaus// USB Integration, first non public release//// Revision 1.37.2.22 2003/02/16 16:36:16 klaus// pcan_usb_kernel.c returned to main modules//// Revision 1.37.2.21 2003/02/09 10:29:20 klaus// code cleanup, Release_20030208_x//// Revision 1.37.2.20 2003/02/08 17:32:43 klaus// modified to use pcan_usb_kernel as proprietary module//// Revision 1.37.2.19 2003/01/29 20:34:20 klaus// release_20030129_a and release_20030129_u released//// Revision 1.37.2.18 2003/01/29 20:34:20 klaus// release_20030129_a and release_20030129_u released//// Revision 1.37.2.17 2003/01/28 23:28:26 klaus// reorderd pcan_usb.c and pcan_usb_kernel.c, tidied up//// Revision 1.37.2.16 2003/01/26 22:35:39 klaus// it's not allowed to invoke 2 waits for bulk transfer at the same pipe at the same time////****************************************************************************//----------------------------------------------------------------------------// INCLUDES#include <src/pcan_common.h>#include <linux/types.h>#include <linux/list.h>#include <linux/wait.h>#include <linux/spinlock.h>#include <asm/atomic.h>#ifdef PARPORT_SUBSYSTEM#include <linux/parport.h>#endif#ifdef USB_SUPPORT#include <linux/usb.h>#if LINUX_VERSION_CODE > KERNEL_VERSION(2,4,19)typedef struct urb urb_t, *purb_t;#endif#endif#include <pcan.h>//----------------------------------------------------------------------------// DEFINES#define CHANNEL_SINGLE 0 // this is a single channel device#define CHANNEL_MASTER 1 // multi channel device, this device is master#define CHANNEL_SLAVE 2 // multi channel device, this is slave#define READBUFFER_SIZE 80 // buffers used in read and write call#define WRITEBUFFER_SIZE 80#define PCAN_MAJOR 0 // use dynamic major allocation#define DEVICE_NAME "pcan" // the name of the module and the proc entry#define READ_MESSAGE_COUNT 500 // max read message count#define WRITE_MESSAGE_COUNT 50 // max write message count// parameter wBTR0BTR1// bitrate codes of BTR0/BTR1 registers#define CAN_BAUD_1M 0x0014 // 1 MBit/s#define CAN_BAUD_500K 0x001C // 500 kBit/s#define CAN_BAUD_250K 0x011C // 250 kBit/s#define CAN_BAUD_125K 0x031C // 125 kBit/s#define CAN_BAUD_100K 0x432F // 100 kBit/s#define CAN_BAUD_50K 0x472F // 50 kBit/s#define CAN_BAUD_20K 0x532F // 20 kBit/s#define CAN_BAUD_10K 0x672F // 10 kBit/s#define CAN_BAUD_5K 0x7F7F // 5 kBit/s// maximum allocated number of endpoints (w.o. control endpoints) of pcan-usb#define PCAN_USB_MAX_ENDPOINTS 4typedef struct{ u16 wStepSize; // size of bytes to step to next entry u16 wCopySize; // size of bytes to copy void *bufferBegin; // points to first element void *bufferEnd; // points to the last element int nCount; // max count of elements in fifo int nStored; // count of currently received and stored messages u32 dwTotal; // received messages void *r; // points to the next Msg to read into the read buffer void *w; // points to the next Msg to write into read buffer spinlock_t lock; // mutual exclusion lock u32 flags; // used by spin_lock_irqsave(..); u8 bPutClaimed; // set, if claimed for put u8 bGetClaimed; // set, if claimed for get} FIFO_MANAGER;typedef struct{ u32 dwPort; // the port of the transport layer u32 dwConfigPort; // the confiuration port, PCI only void *pvVirtPort; // virtual address of port void *pvVirtConfigPort; // only PCI, the virtual address of the config port u16 wIrq; // the associated irq level u8 ucMasterDevice; // until now only for PCI if the 1st control 2nd chip } PCI_PORT;typedef struct{ u32 dwPort; // the port of the transport layer u16 wIrq; // the associated irq #ifdef PARPORT_SUBSYSTEM struct pardevice *pardev; // points to the associated parallel port (PARPORT subsytem) #endif u16 wEcr; // ECR register in case of EPP u8 ucOldDataContent; // the overwritten contents of the port registers u8 ucOldControlContent; u8 ucOldECRContent;} DONGLE_PORT;typedef struct{ u32 dwPort; // the port of the transport layer u16 wIrq; // the associated irq level} ISA_PORT;#ifdef USB_SUPPORTtypedef struct{ u8 ucNumber; // number (or address) of endpoint u16 wDataSz; // supported max data transfer length} PCAN_ENDPOINT;typedef struct{ struct usb_device *usb_dev; // the origin pointer to my USB device from kernel PCAN_ENDPOINT Endpoint[PCAN_USB_MAX_ENDPOINTS]; // current endpoint numbers and sizes u32 dwSerialNumber; // Serial number of device u8 ucHardcodedDevNr; // ascending number stored in device to distinguish after hotplug u8 ucRevision; // the revision number of the device wait_queue_head_t usb_wait_queue; // wait queue for usb transactions concerning this device spinlock_t lock; // for save start and stop of services atomic_t active_urbs; // not all active urbs for this device atomic_t param_xmit_finished; // flag set when parameter read is finished purb_t param_urb; // URB structure for parameter read purb_t read_data; // pointer to read data urb u8 *pucReadBuffer[2]; // read data transfer buffer for toggle u16 wReadBufferLength; // *used* read buffer length purb_t write_data; // pointer to write data urb u8 *pucWriteBuffer; // buffer for to write data (OUT) u32 dwTelegramCount; // counter for telegrams void *pvXptr; // ptr to X} USB_PORT;#endif // USB_SUPPORTtypedef struct pcandev{ struct list_head list; // link anchor for list of devices int nOpenPaths; // number of open paths linked to the device u16 wInitStep; // device specific init state int nMinor; // the associated minor char *type; // the literal type of the device, info only u16 wType; // (number type) to distinguish sp and epp union { DONGLE_PORT dng; // private data of the various ports ISA_PORT isa; PCI_PORT pci; #ifdef USB_SUPPORT USB_PORT usb; #endif } port; u8 (*readreg)(struct pcandev *dev, u8 port); // read a register void (*writereg)(struct pcandev *dev, u8 port, u8 data); // write a register int (*cleanup)(struct pcandev *dev); // cleanup the interface int (*open)(struct pcandev *dev); // called at open of a path int (*release)(struct pcandev *dev); // called at release of a path int (*req_irq)(struct pcandev *dev); // install the interrupt handler void (*free_irq)(struct pcandev *dev); // release the interrupt int (*device_open)(struct pcandev *dev, u16 btr0btr1, u8 bExtended, u8 bListenOnly); // open the device itself void (*device_release)(struct pcandev *dev); // release the device itself int (*device_write)(struct pcandev *dev); // write the device wait_queue_head_t read_queue; // read process wait queue anchor wait_queue_head_t write_queue; // write process wait queue anchor u8 bExtended; // if 0, no extended frames are accepted u32 *pdwInitTime; // time in msec when init was called int nLastError; // last error written u32 dwErrorCounter; // counts all fatal errors u32 dwInterruptCounter; // counts all interrupts u16 wCANStatus; // status of CAN chip u16 wBTR0BTR1; // the persistent storage for BTR0 and BTR1 u8 ucCANMsgType; // the persistent storage for 11 or 29 bit identifier u8 ucListenOnly; // the persistent storage for listen-only mode u8 ucPhysicallyInstalled; // the device is PhysicallyInstalled atomic_t DataSendReady; // !=0 if all data are send FIFO_MANAGER readFifo; // manages the read fifo FIFO_MANAGER writeFifo; // manages the write fifo TPCANRdMsg rMsg[READ_MESSAGE_COUNT]; // all read messages TPCANMsg wMsg[WRITE_MESSAGE_COUNT]; // all write messages} PCANDEV;typedef struct fileobj{ struct pcandev *dev; // pointer to related device u8 pcReadBuffer[READBUFFER_SIZE]; // buffer used in read() call u8 *pcReadPointer; // points into current read data rest int nReadRest; // rest of data left to read int nTotalReadCount; // for test only u8 pcWriteBuffer[WRITEBUFFER_SIZE]; // buffer used in write() call u8 *pcWritePointer; // work pointer into buffer int nWriteCount; // count of written data bytes} FILEOBJ;typedef struct driverobj{ int nMajor; // the major number of Pcan interfaces u16 wDeviceCount; // count of found devices u16 wInitStep; // driver specific init state u32 dwInitTime; // time in msec when init was called struct list_head devices; // base of list of devices u8 *szVersionString; // pointer to the driver version string #ifdef USB_SUPPORT struct usb_driver usbdrv; // usb driver structure #endif} DRIVEROBJ;//----------------------------------------------------------------------------// the global driver objectextern struct driverobj pcan_drv;//----------------------------------------------------------------------------// exported functions - not to Linux kernel!u32 get_mtime(void); // request time in msecvoid pcan_soft_init(struct pcandev *dev, char *szType, u16 wType);void buffer_dump(u8 *pucBuffer, u16 wLineCount);#endif // __PCAN_MAIN_H__⌨️ 快捷键说明
复制代码
Ctrl + C
搜索代码
Ctrl + F
全屏模式
F11
切换主题
Ctrl + Shift + D
显示快捷键
?
增大字号
Ctrl + =
减小字号
Ctrl + -